Platen for type-writers.



L. l. HARRINGTON.

PLATEN FOR TY'QE WRITERS. APPLICATION FILED OCT. 6, I910.

1,230,295. Patented J une 19, 1917.

UNITED STATES arana: OFFICE.

LYNN J. HARRINGTON. 0F PHILADELPHIA. PENNSYLVANIA, ASSIGNOR TO 14.. C. SMITH $5 BROS. TYPEWRITER COMPANY. NEW YORK.

0F SYRACUSE, NEW YORK, A CORPORATION OF PLATEN FOR TYPE-WRITERS.

Specification of Letters Patent.

Jnt i-nled J une 19, 1917.

Application filed 0mms, 1910. Serial No. 585,720.-

I?) all whom it may concern.

lie it known that], LYNN .l. llAnluxoroN, a rilizen of lhe United States. and rrsnlenl of lhihnlelphiu, county of Philadelphia, State-'01? Pennsylvania, have inrrnted eertain new and useful Improvements in llutens for 'lTypeJ'Vri ers, of which the following is a specification.

In preparing stencil plates upon (he typw Writer for addressing machines, and in ol ln-r similar work, the surface of the t \'pe\\'ri'tr|' platen becomes indented and worn in the particular place or zone used and when ordinary latens are used for this class ol work consi erable expense is incurred for plulon renewals. This invention relate'sto a platen, a portion of the surface layer or cover of which is removable and interchangcaldo with other like portions, a supply of which can be provided at slight cost. The invention further relates to means for sustaining the removable pprti on in position on the platen, means for sustaining the'work in proper relation to the removable portion and means for ositiohing the platen for writing on the WOI'E When sefsustai'nedz In addition to pre paring stencils; the'iniproved platen is especially adapted for writing on cards, envelops and other/small sheets. The invention ivill be described in connection-withthe accompanying drawing in which,

Figure 1 is aside elevation of a platen e1nhodylng the invention;

Fig. 2 is a section on the line 2-2 of Fi l;

ig. 31s a View of the right end of the platen;

Fig. 4 illustrates a stencil blank which the platen is'adapted to receive.

Referring to the drawing, A indicates a platen which maybe of the usual constructlon except as hereinafter noted. The body 7 of the platen consists of a core 10 of wood or similar material and the coverin 11 of hard rubber or like material. The p aten is provided with the usual shaft sections 12, knobs or twirlers l3 and feed ratchet 14.

The covering of the movable section 11* which is slightly lar er than thecar s or envelo s for which t e platen is to bc-used. That 1s, the removable section of the cover is 21 segment of a cylinder and usually less 1n length than the platen. In the instance i1lusplaten includes a re refer-ably but.

(rah-d llnplnlrn is adapted for writing stenril :l(l(ll(.-'.\ill,' cards of [he rhuracler illuslrulrd in Fig". -l. 'lhrse rnrds comprise thin pan ls lo npo'n nhirh addresses are written or wrl'ornlrd and frames orsustaining her 21) is shown in dotted lines in position i'or printing, As shown inFig. 1 a shoulder or projection 2l on the platen adjacent to the edge ol the holding slrip 15) is in position to engage the left end of the en rd and position it upon the platen.

It is desirable to limit the revolution of a platen, when printing cards, to enable the operator to set it rapidly for' the first line on each. card and to prevent it from being turned i'mckward more than is necessary to bring all parts of the card to the printing point. As shown in the drawing, a gage piece 22 is adj ustably connected to the platen at its right end by means of screws 23 passing through slots 24. The part22 has downwardly turned gaging projections 25, 26, which cooperate rerpcctivcly with fixed steps 27, 28, to limit the rotary movement of the platen, the stops being suitably connected to the carriage.

In the practical use of the invention the same platen can be used indefinitely, the sections 11 being removed and replaced as often as may be necessary. A great saving in expense of writing on small cards or sheets is thus efi'ected. This is particularly notable in preparing stencils for addressing machines as thepaper on which the addresses are cut is. very thin and is operated upon by the bare type, essary. In such work the platen is very rapidly worn and'indented sons to unfit it for use and by simply section according to this invention the work may be carried on continuously at slight ex- BIISB.

. p It l e-understood thatmy invention is replacing the worn out is,

and replacementof the platen without difliculty and it is understood that platens made aocprdin I to my-mvention are tobe interchangeab c with the ordinary platens of .varigustypewriters.

Hav ng described my invention what I claim and desire to secure by Letters Pat- 1. A cylindrical typewriter platen having clips for holding a removable segmental cylindri cal surface section thereon, and means for positioning-a-card or stencil over said removable seotlon.

" 2, A. typewriter platen having a segmem tal;section of its 0 lindrical cover-in material removable, e ps connected the platen and overlapping said removable section for seouringt 1e same in operative position; and means for positioning a card over Said removable section both laterally and longitudinally.

3. A rotatable typewriter platen provided with a removable segmental cylindrical cover stops for limiting the rothe platen to prevent the platen having a removable seglmental cylindrical cover secolding device for holding a over sald removable cover sect1on,-and

tion a card card stops for preventing the card from being turned away from the printing point.

In testimony whereof I afiix my signature in presence of two witnesses.

LYNN J. HARRINGTON.

Witnesses EDWARD L. EYLAn, THOS. H. BOYER.

from being turned away 

